Nut-lock.



,. -PATENTED MM2-6,1903. H.V E. smv-10K.

NUT LOCK.

APPLIoATloN FILED oo'1.4, 1902.l

'No MODEL.

UNITED STATES Patented May 26, 1903.

NUT-fLvoCKQ- sPEcIFTcATIoN forming part of Letters Patent No.729,441.2,datea May as, 1903.

Application inea october 4, loon.

T0 a/ZZ whom, it may conceive.-

Be it known that I, I-IIRAM E.' STEVICK, a citizen of the United States,residing at Evans City, in the county of Butler and State ofPennsylvania, have invented a new and useful Improvement in Nut-Locks,of which improvement the following is a specification.

My invention relates to an improved nutlock.

The object of my invention is to provide an effective nut-lock that willlock then ut on the bolt so that it will not be worked off by vibration,and one in which the nut may be readily unlocked and removed from thebolt.

Finally, the object of my invention resides in providing a nut-lock thatwill be strong, durable, and efficient and one that will be simple tooperate and inexpensive to produce.

Furthermore, `my invention consists in the novel details ofconstruction, a preferable embodiment of which is illustrated in thedrawings, and described in the specification, and pointed ont in theclaims hereunto anneXed.

Figure l is a top plan View, partly in section, showing the locking-pinsin their relative positions. Fig. 2 is a side elevation showing mynut-lock applied to the end of a bolt, and Fig. 3 is a perspective Viewof the locking-pin.

In the drawings the numeral l designates the nut provided with channels2 and 2', which are arranged at angles to each other and formed on oneside or at opposite sides of the nut. The nut is provided with the usualscrew-threaded opening and is formed in any suitable shape. Fitting inthe channel 2 is a pin 3, provided at its one end with a rounded portion6 and at its opposite end with the oppositely-disposed iattened portions4: and 4t', the former Abeing beveled and in conjunction with the latterforms a sharp cutting edge 4". The cutting edge 4" is adapted to biteinto the thread off the bolt when the pin 3 isgiven a thrust from apunch inserted in the channel 2.

' A Cotter-pin 7 is introduced into lthe chan- V nel 2 and passed alongover the rounded end .are spread to hold the pin 7 in place.

6 of the pin 3 until its ends 7 protrude from the opposite end of thechannel, when they It will thus be seen that the locking-pin 3 is heldvthus held inthe nut.

Serial No. 125,878. (No model.)

against endwise movement bylits contact with the threads of the bolt 1lat one end and the cotter-pin 7 at the other end.

As an additional holding means for the locking-pin 3 it is provided witha recess 5 in its upper surface, which is adapted to receive the end ofa set-'screw lO, inserted through the top of the nut and screwed down onthe pin to hold the latter tightly in the channel 2. This set-screw 10may be loosened to re lieve its pressure on the pin, so that when theCotter-pin is removed the locking-pin 3 may have a limited reciprocatorymovement by reason of its elongated slot 5, and thus the pin 3 will notfall out of the channel 2 and become lost.

'Ifhe method of applying and locking the nut to the bolt will be readilyunderstood from the following: The nut is screwed onto the end ol thebolt until it binds, when the locking-pin 3 is given a blow with anordinary hand-punch, which causes the sharp edge 4 of the pin to sinkinto the threads of the bolt, thereby locking the nut in its bindingposition. I The cutter-pin 7 is then inserted in the channel 2'andshoved'past the rounded end 6 of the pin 3 andout of the end ofthechannel, where its ends 7' are spread, and it is The set-screw 10 maynow be screwed down on the pin 3 and thereby aording an additionalsecuring means for the locking-pin,

The cotter-pin 77may be removed and the set-screwlO loosened, therebyreleasing the locking-pin, which when the nut l is turned will beshoved-back into the channel 2, thus unlocking thenut and allowing it tobe turned off of the bolt.

I do not care to limit myself to the eXact details of construction andoperation as set forth herein, as I may make various changes in thesamel wholly within the scope of my claims and Without departing fromthe spirit of my invention.

Having thus described my invention, what ICO adapted to bite into thethreads of a bolt to pin to hold the same, and a 1ocking-pin passholdthe nut thereon, and a Cotter-pin fitting in the other channel,substantially as described.

2. In a nut-lock, the combination with a bolt, of a nut having channelstherein at; angies to one another, a sliding locking-pin having a recessin its upper surface arranged in one of the channels, said pin adaptedto bite the threads of the bolt at one end and having a rounded portionat the other end thereof, means adapted to engage the recess in said ingthrough the other of said channels and adapted to engage the roundedportion of said first-named locking-pin, substantially as described.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

HIRAM E. STEVICK.

In presence of- LoUIs MoEsER, M. E. HARRISON.

